Product Overview
Description
Plot Canopy Height characterizes height using 3D reconstruction derived from RGB imagery and is related to measurements of leaf canopy height and can be used to assess growth stage or crop damage. Canopy height represents the distance between the soil and leaf canopy surfaces and in some case may not be the same measurement as plant height (i.e., depending on manual measurement methods). This product utilizes a precision-aligned orthomosaic derived from high-resolution RGB imagery.
Recommended Use Cases
- Plant Growth
- Plant Height
- Biomass
- Plot Quality
- Plot Deactivation
- Area of Interest Variability
Supported Crops
- Corn/Maize
- Soybean
- Cotton
- Small Grain
- Canola/OSR
Deliverables Summary
- Mosaic RGB and Digital Surface Model Precision Aligned
- Plot Canopy Height
Requirements
General Requirements
- Imagery collected following all “Data Capture Requirements”
- Imagery uploaded to the FieldAgent Field created by Plot Project Setup (71200-00)
- Contract Defined – Mosaic Based submitted for “Plot Canopy Height (71206-00)” for uploaded Survey
- Alleys (i.e., bare soil) between plots greater than 10 ft (3m)
Data Capture Requirements
Imagery Type
- Visual RGB (Global Shutter)
Ground Sample Distance
- Less than 1.7cm
Timing by Crop
| Crop ✥ | Timing/Growth Stage | Plant Size |
|---|---|---|
| Corn/Maize | V6 – R4 | Greater than 2ft (0.6m) height |
| Soybean | V4 to R6 | Greater than 1 ft (0.3 m) height |
| Cotton | 50% canopy to before leaf | Greater than 1 ft (0.3 m) height |
| Small Grain | 50% canopy to before leaf | Greater than 1 ft (0.3 m) height |
| Canola/OSR | 50% canopy to before leaf | Greater than 1 ft (0.3 m) height |
Flight Specifications
| Sensor | Altitude | Speed | Overlap | Flight Direction | Buffer | Heading | Gimbal Pitch | Terrain Informed |
|---|---|---|---|---|---|---|---|---|
| Mavic 3 Enterprise | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| Phantom 4 Pro | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| Phantom 4 RTK | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| Zenmuse X4S | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| Zenmuse X5S | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| Zenmuse P1 (35mm) | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
| 65R | 200ft (60m) | 10mph (5ms) | 85% | Any | 50ft (14m) | Forward | -75° (below horizon) | Off |
Environmental Conditions
Lighting
Imagery should be captured between the time of 2 hours after sunrise and 2 hours before sunset. Consistent lighting conditions required for best results, including avoidance of hard shadows cast over the field which cause bright spots and dark spots in the dataset.
Wind
Wind conditions should be within the specified limits of the aircraft or system being used to carry the imaging sensor.
Precipitation
There should be no active precipitation during imagery capture.
Deliverables
Analytic by Imagery Type
| Analytic | Visual RGB (Global Shutter) |
|---|---|
| Mosaic RGB and Digital Surface Model Precision Aligned (82201-01) | X |
| Plot Canopy Height (83008-00) | X |
Mosaic RGB and Digital Surface Model Precision Aligned (82201-01)
Description
A Visual Red, Green, and Blue (RGB) multi-band mosaic and an elevation digital surface model (DSM) single-band mosaic provided at native resolution and georeferenced.
Deliverable List
| Deliverable | Format | Description |
|---|---|---|
| Mosaic: RGB (Preliminary)* | GeoTiff | Visual RGB multi-band, native resolution, and non-georeferenced raster |
| Mosaic: RGB | GeoTiff | Visual RGB multi-band, native resolution, and georeferenced raster |
| Mosaic: DSM | GeoTiff | DSM single-band, full-resolution, and georeferenced raster |
Data Attributes
Plot Canopy Height (83008-00)
Description
Canopy height summarizes the difference between the digital surface model of the crop canopy from the digital elevation model of the soil surface using photogrammetric reconstruction to determine height within a plot as well as variability of height within a plot.
Deliverable List
| Deliverable | Format | Description |
|---|---|---|
| Plot Canopy Height | Shapefile, GeoJSON, CSV | Plot-level summary statistics |
| Mosaic: Canopy Height | GeoTiff | Canopy height precision-aligned raster |
Data Attributes
Plot Canopy Height
| Attribute | Description | Units Metric | Units Imperial |
|---|---|---|---|
| Height – Average (m) <DD-Mon> | Average height of the plot | ||
| Height – Minimum (m) <DD-Mon> | Minimum height of the plot | ||
| Height – 10th Percentile (m) <DD-Mon> | 10th percentile height of the plot | ||
| Height – 90th Percentile (m) <DD-Mon> | 90th percentile height of the plot | ||
| Height – Max (m) <DD-Mon> | Maximum height of the plot |